Global Patent Index - EP 2328273 A1

EP 2328273 A1 20110601 - Digital radio frequency modulators

Title (en)

Digital radio frequency modulators

Title (de)

Digitale Radiofrequenzmodulatoren

Title (fr)

Modulateurs de fréquence radio numérique

Publication

EP 2328273 A1 20110601 (EN)

Application

EP 09177255 A 20091126

Priority

EP 09177255 A 20091126

Abstract (en)

Various digital RF modulators are proposed. A first proposed RF modulator comprises a quantization noise shaper (50) adapted to modify quantisation noise resultant from an interpolator of the RF modulator such that the quantisation noise at a predetermined frequency is reduced. A second proposed RF modulator comprises first (80A) and second (80B) RF modulators adapted to be controlled by first and second clock signals, respectively, wherein the second clock signal is a delayed version of the first clock signal.

IPC 8 full level

H03M 1/60 (2006.01)

CPC (source: EP)

H03M 3/502 (2013.01)

Citation (search report)

  • [Y] EP 2037585 A1 20090318 - ST MICROELECTRONICS NV [NL], et al
  • [Y] EP 2037584 A1 20090318 - ST MICROELECTRONICS NV [NL], et al
  • [XY] ANTOINE FRAPPE ET AL: "All-digital RF signal generation for software defined radio", CIRCUITS AND SYSTEMS FOR COMMUNICATIONS, 2008. ECCSC 2008. 4TH EUROPEAN CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 10 July 2008 (2008-07-10), pages 236 - 239, XP031315031, ISBN: 978-1-4244-2419-1
  • [Y] LEE H-S ET AL: "Radio Frequency Digital-to-Analog Converter", IEEE JOURNAL OF SOLID-STATE CIRCUITS, IEEE SERVICE CENTER, PISCATAWAY, NJ, US LNKD- DOI:10.1109/JSSC.2004.829377, vol. 39, no. 9, 1 September 2004 (2004-09-01), pages 1462 - 1467, XP011117965, ISSN: 0018-9200
  • [Y] SHAHIN MEHDIZAD TALEIE ET AL: "A Linear â Digital IF to RF DAC Transmitter With Embedded Mixer", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 55, no. 5, 1 May 2008 (2008-05-01), pages 1059 - 1068, XP011206782, ISSN: 0018-9480
  • [Y] TALEIE S M ET AL: "A Bandpass /spl Delta//spl Sigma/ RF-DAC with Embedded FIR Reconstruction Filter", DIGEST OF TECHNICAL PAPERS / 2006 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE : SAN FRANCISCO, CA, 5 - 9 FEBRUARY 2006, IEEE SERVICE CENTER, PISCATAWAY, NJ , US LNKD- DOI:10.1109/ISSCC.2006.1696300, 6 February 2006 (2006-02-06), pages 2370 - 2379, XP010940644, ISBN: 978-1-4244-0079-9
  • [Y] HAO SAN ET AL.: "Complex Bandpass Delta Sigma AD Modulator with Nouse-coupled Image Rejection", IEEE, 2 August 2009 (2009-08-02) - 5 August 2009 (2009-08-05), pages 357 - 360, XP002579816
  • [Y] AL-JANABI M ET AL: "Methods for the transfer function design of multiple narrow-band bandpass sigma-delta modulators", COMPUTER STANDARDS AND INTERFACES, ELSEVIER SEQUOIA. LAUSANNE, CH LNKD- DOI:10.1016/S0920-5489(01)00062-9, vol. 23, no. 2, 1 May 2001 (2001-05-01), pages 85 - 102, XP004232990, ISSN: 0920-5489

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

EP 2328273 A1 20110601

DOCDB simple family (application)

EP 09177255 A 20091126